Transverse mode coupling in an optical resonator |
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Authors: | Klaassen Thijs de Jong Johan van Exter Martin Woerdman J P |
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Institution: | Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands. tklaassen@molphys.leidenuniv.nl |
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Abstract: | Small-angle scattering due to mirror surface roughness is shown to couple the optical modes and deform the transmission spectra in a frequency-degenerate optical cavity. A simple model based on a random scattering matrix clearly visualizes the mixing and avoided crossings between multiple transverse modes. These effects are visible only in the frequency-domain spectra; cavity ringdown experiments are unaffected by changes in the spatial coherence, as they probe just the intracavity photon lifetime. |
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